Divination cup, probably Turkish, 1451.

Divination cup, probably Turkish, 1451.

Post-flare loop above the Sun's surface, ultraviolet photograph from Skylab, 1973.

Post-flare loop above the Sun's surface, false colour photograph by Skylab, 1973.

Beacon House on the Bell Rock, c 1807.

Bronze weights, 16th century.

28lb avoirdupois weight, 1558-1582.

Trade card of Wickes & Co, chemists and druggists, 19th century.

Bronze amulet with horses' hooves and mounted by a woman. Graeco-Roman, 100 BCE-400 CE.

Axe-head and two flanged celts, Bronze Age.

Diamond no 2 dental chair, 1925-1935.

Diamond No 2 dental chair, 1925-1935.